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The 45-lb block A and the 55-lb block B are supported by an incline
that is held in the position shown. Knowing that the coefficient of static
friction is 0.15 between the two blocks and zero between block B and
the incline, determine the value of θ for which motion is impending.

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The 45-lb block A and the 55-lb block B are supported by an incline that is held in the position shown. Knowing that the coefficient of static friction is 0.15 between the two blocks and zero between block B and the incline, determine the value of θ for which motion is impending.